这是一个简单的作业运行器库，为每个作业分配一个专用线程，并允许在调用作业逻辑之间配置延迟。

示例

使用JobRunner实用工具的程序应具有以下基本框架

use job_runner::{Job, JobRunner, fixed_delay};

fn main() {
    // At program startup, create the JobRunner and register your tasks.
    let mut job_runner = JobRunner::new();
    job_runner.start(Job::new(
        "cool_job",
        fixed_delay(std::time::Duration::from_secs(5)),
        my_cool_job));

    // Do other things in your program...

    // Then, when shutting down your program, signal all the job threads
    // to stop running.
    job_runner.stop_all();

    // Maybe signal other parts of your program to gracefully shut down too...

    // Finally (and optionally) wait for the job threads to actually exit.
    job_runner.join_all();
}

fn my_cool_job() {
    // Do cool things..
}